Aumento, Fabrizio (1969): Annotated record of the detailed examination of Mn deposits observed Mid-Atlantic Ridge at 45°N [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.883643, Supplement to: Aumento, F (1969): Diorites from the Mid-Atlantic Ridge at 45 N. Science, 165(3898), 1112-1113, https://doi.org/10.1126/science.165.3898.1112
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Diorites, associated with basalts, basalt breccias, and serpentinized peridotites, occur in situ on the faulted scarps of two seamounts from the western High Fractured Plateau of the Mid-Atlantic Ridge at 45°N.
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Median Latitude: 45.549945 * Median Longitude: -28.060442 * South-bound Latitude: 45.216667 * West-bound Longitude: -29.866667 * North-bound Latitude: 45.800000 * East-bound Longitude: -27.050000
Date/Time Start: 1968-08-24T00:00:00 * Date/Time End: 1968-09-09T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
HUD68/22-143 * Latitude: 45.500000 * Longitude: -28.600000 * Date/Time: 1968-08-24T00:00:00 * Elevation: -2395.0 m * Location: Atlantic Ocean * Campaign: BI22-68-Phase4 * Basis: Hudson * Method/Device: Dredge (DRG)
HUD68/22-147 * Latitude: 45.483333 * Longitude: -28.600000 * Date/Time: 1968-08-25T00:00:00 * Elevation: -2194.0 m * Location: Atlantic Ocean * Campaign: BI22-68-Phase4 * Basis: Hudson * Method/Device: Dredge (DRG)
HUD68/22-156 * Latitude: 45.800000 * Longitude: -29.116667 * Date/Time: 1968-08-28T00:00:00 * Elevation: -2295.0 m * Location: Atlantic Ocean * Campaign: BI22-68-Phase4 * Basis: Hudson * Method/Device: Dredge (DRG)
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Method/Device of event | Method/Device | ||||
| 6 | Identification | ID | ||||
| 7 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 8 | Position | Position | Visual description | |||
| 9 | Deposit type | Deposit type | ||||
| 10 | Quantity of deposit | Quantity | ||||
| 11 | Size | Size | ||||
| 12 | Substrate type | Substrate | ||||
| 13 | Description | Description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
91 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Method/Device | 6 ID | 7 Depth sed [m] | 8 Position | 9 Deposit type | 10 Quantity | 11 Size | 12 Substrate | 13 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HUD68/22-143 | 45.5000 | -28.6000 | -2395 | Dredge | HUD68/22-143-1 | 0 | Surface | Mn coating | Several | 0.3 cm thick | Rock; basalt | Sub-angular basalt rock fragments with 0.18 cm weathered outer zone. 0.3 cm manganese coating |
| HUD68/22-147 | 45.4833 | -28.6000 | -2194 | Dredge | HUD68/22-147-1 | 0 | Surface | Mn coating | Several | 0.15-0.4 cm thick | Boulder; basalt, volcanics | Relatively fresh basalt boulders with 0.15 to 0.4 cm thick manganes coating |
| HUD68/22-156 | 45.8000 | -29.1167 | -2295 | Dredge | HUD68/22-156-1 | 0 | Surface | Mn crust | Several | Up to 2.0 cm thick | Boulder; basalt, volcanics | Sub-rounded, pyramidal basalt boulders and cobbles. Along with angular-knobbly breccia and a few serpentine cobbles. 0.05-0.3 cm manganese coating up to 2.0 cm manganese crust on highly weathered pieces of serpentinite or greenstone. |
| HUD68/22-159 | 45.7670 | -28.9830 | -2558 | Dredge | HUD68/22-159-1 | 0 | Surface | Mn crust | Many | Up to 1.2 cm thick | Boulder, cobble; basalt, volcanics, igneous | Large haul of basalt boulders and cobbles, some severely weathered. Along with many highly weathered serpentine and less weathered diorite. Up to 1.2 cm manganese crust. |
| HUD68/22-165 | 45.2167 | -29.8667 | -2395 | Dredge | HUD68/22-165-1 | 0 | Surface | Mn crust | Many | Up to 2.0 cm thick | Boulder; serpentinite, basalt | Numerous boulders of serpentinite, sometimes greenstone, severely weathered along with basalt boulders and cobbles (up 12.0 cm weathered zone). Up 2.0 cm manganese crust with more often 0.6 to 0.2 cm manganese coating. |
| HUD68/22-168 | 45.3833 | -27.5833 | -2304 | Dredge | HUD68/22-168-1 | 0 | Surface | Mn coating | Several | Up to 0.1 cm thick | Cobble; volcanics, limestone | Greenstone and basalt and some limestone cobbles. Manganese staining upt to thin 0.1 cm coating |
| HUD68/22-173 | 45.6167 | -27.7167 | -2331 | Dredge | HUD68/22-173-1 | 0 | Surface | Mn coating | Few | Up to 0.15 cm thick | Boulder, cobble; basalt | Large haul of boulders and cobbles of vesicular rather fresh basalt with some Mn staining and rare thin manganese coating up to 0.15 cm |
| HUD68/22-187 | 45.5000 | -27.3333 | -2564 | Dredge | HUD68/22-187-1 | 0 | Surface | Mn coating | Several | Up to 0.2 cm thick | Boulder; basalt | Boulders, cobbles of basalt, sometimes weathered with coral growth along with manganese stained coralline fragments. Thin manganese coating (0.2 cm) |
| HUD68/22-190 | 45.3500 | -27.1667 | -2366 | Dredge | HUD68/22-190-1 | 0 | Surface | Mn coating | Several | Up to 0.25 cm thick | Boulder; basalt, igneous | Boulders, cobbles of severely weathered vesicular basalt along with diorite. Thin manganese coating (up to 0.25 cm) |
| HUD68/22-192 | 45.5833 | -27.0500 | -2262 | Dredge | HUD68/22-192-1 | 0 | Surface | Mn crust | Several | Up to 1.0 cm thick | Boulder; serpentinite | Boulders and cobbles of serpentinite-harzburgite, severely weathered. Manganese crust up to 1.0 cm. |
| HUD68/22-193 | 45.6000 | -27.2500 | -2450 | Dredge | HUD68/22-193-1 | 0 | Surface | Mn coating | Several | Up to 0.4 cm thick | Boulder, cobble; basalt | Boulders and cobbles of severely weathered vesicular basalt with thin manganese coating of 0.4 cm |
| HUD68/22-197 | 45.6812 | -27.7867 | -3485 | Dredge | HUD68/22-197-1 | 0 | Surface | Mn coating | Several | 0.01 cm thick | Rock; basalt | Angular fragments of pillow basalts with very thin manganese coating (0.01 cm) |
| HUD68/22-198 | 45.6678 | -27.7327 | -2896 | Dredge | HUD68/22-198-1 | 0 | Surface | Mn coating | Several | 0.01 cm thick | Rock; igneous | Angular meta-gabbro fragments with very thin manganese coating (0.01 cm) |